方法一：取消勾选“更新Windows时提供其他Microsoft产品的更新”
1、开始-设置-更新和安全-Windows更新，点击“高级选项”；
2、取消勾选“更新Windows时提供其他Microsoft产品的更新”；
3、更新过程可以成功完成，注意：需要多次运行Windows更新以获取所有更新；
4、一旦看到信息“系统已经处于最新状态”，回到步骤1中的“高级选项”，重新勾选“更新Windows时提供其他Microsoft产品的更新”；
5、重新检查更新，即可下载并安装所有更新。
方法二：临时关闭Windows defender
1、点击任务栏开始按钮旁的搜索框，输入Defender；
2、在Windows Defender窗口，查看“设置”；
3、滑动按钮关闭“实时保护”；
4、滑动按钮关闭“基于云的保护”；
5、关闭设置窗口；
6、Windows Defender应用显示红色如下：
7、尝试方法一中的所有步骤，如果更新成功后，请重新打开“实时保护”和“基于云的保护”。
方法四：使用Windows更新疑难解答，重启Windows Update服务
1、运行其中提供的Windows更新疑难解答，然后重启Windows Update服务。
关于如何重启Windows Update服务，可以参考以下步骤：
- 以管理员权限运行CMD命令行窗口；
- 输入net stop wuauserv，点击enter；
- 等待完成确认信息；
- 输入net start wuauserv，点击enter；
- 等待完成确认信息。
提示：这个报错有可能与第三方杀毒软件或防火墙相关，也可以尝试先禁用这些软件测试是否可以成功完成Windows更新。
参考：
http://www.111cn.net/sys/361/108954.htm
https://answers.microsoft.com/en-us/windows/forum/windows_10-update-winpc/windows-10-update-error-0x800705b4/37331a9b-d0f4-4ce8-b408-9b008f20da5b?auth=1
https://answers.microsoft.com/en-us/insider/forum/insider_wintp-insider_update/windows-10-service-registration-is-missing-or/a2bfb3c3-665f-4f22-92d9-cf82f0a950be?page=1&auth=1
https://www.thegeneralistit.com/blog/2015/10/02/fixing-windows-10-update-error-0x800705b4/
修复 Windows 更新错误
https://support.microsoft.com/zh-cn/help/10164
Windows Installer服务类型是“手工”，没有关系，不要改成“自动”，修改注册表导致msiserver服务不见了，可以从其它windows处导入msiserver注册表项,再重启就有Windows Installer服务了:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msiserver]
"DisplayName"="@%SystemRoot%\\system32\\msimsg.dll,-27"
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):25,00,73,00,79,00,73,00,74,00,65,00,6d,00,72,00,6f,00,6f,00,\
74,00,25,00,5c,00,73,00,79,00,73,00,74,00,65,00,6d,00,33,00,32,00,5c,00,6d,\
00,73,00,69,00,65,00,78,00,65,00,63,00,2e,00,65,00,78,00,65,00,20,00,2f,00,\
56,00,00,00
"Start"=dword:00000003
"Type"=dword:00000010
"Description"="@%SystemRoot%\\system32\\msimsg.dll,-32"
"DependOnService"=hex(7):72,00,70,00,63,00,73,00,73,00,00,00,00,00
"ObjectName"="LocalSystem"
"ServiceSidType"=dword:00000001
"RequiredPrivileges"=hex(7):53,00,65,00,54,00,63,00,62,00,50,00,72,00,69,00,76,\
00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,43,00,72,00,65,00,61,00,\
74,00,65,00,50,00,61,00,67,00,65,00,66,00,69,00,6c,00,65,00,50,00,72,00,69,\
00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,4c,00,6f,00,63,00,\
6b,00,4d,00,65,00,6d,00,6f,00,72,00,79,00,50,00,72,00,69,00,76,00,69,00,6c,\
00,65,00,67,00,65,00,00,00,53,00,65,00,49,00,6e,00,63,00,72,00,65,00,61,00,\
73,00,65,00,42,00,61,00,73,00,65,00,50,00,72,00,69,00,6f,00,72,00,69,00,74,\
00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,\
65,00,43,00,72,00,65,00,61,00,74,00,65,00,50,00,65,00,72,00,6d,00,61,00,6e,\
00,65,00,6e,00,74,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,\
00,00,53,00,65,00,41,00,75,00,64,00,69,00,74,00,50,00,72,00,69,00,76,00,69,\
00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,53,00,65,00,63,00,75,00,72,00,\
69,00,74,00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,\
00,53,00,65,00,43,00,68,00,61,00,6e,00,67,00,65,00,4e,00,6f,00,74,00,69,00,\
66,00,79,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,\
00,65,00,50,00,72,00,6f,00,66,00,69,00,6c,00,65,00,53,00,69,00,6e,00,67,00,\
6c,00,65,00,50,00,72,00,6f,00,63,00,65,00,73,00,73,00,50,00,72,00,69,00,76,\
00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,49,00,6d,00,70,00,65,00,\
72,00,73,00,6f,00,6e,00,61,00,74,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,\
00,65,00,67,00,65,00,00,00,53,00,65,00,43,00,72,00,65,00,61,00,74,00,65,00,\
47,00,6c,00,6f,00,62,00,61,00,6c,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,\
00,67,00,65,00,00,00,53,00,65,00,41,00,73,00,73,00,69,00,67,00,6e,00,50,00,\
72,00,69,00,6d,00,61,00,72,00,79,00,54,00,6f,00,6b,00,65,00,6e,00,50,00,72,\
00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,52,00,65,00,\
73,00,74,00,6f,00,72,00,65,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,\
00,65,00,00,00,53,00,65,00,49,00,6e,00,63,00,72,00,65,00,61,00,73,00,65,00,\
51,00,75,00,6f,00,74,00,61,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,\
00,65,00,00,00,53,00,65,00,53,00,68,00,75,00,74,00,64,00,6f,00,77,00,6e,00,\
50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,54,\
00,61,00,6b,00,65,00,4f,00,77,00,6e,00,65,00,72,00,73,00,68,00,69,00,70,00,\
50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,4c,\
00,6f,00,61,00,64,00,44,00,72,00,69,00,76,00,65,00,72,00,50,00,72,00,69,00,\
76,00,69,00,6c,00,65,00,67,00,65,00,00,00,53,00,65,00,42,00,61,00,63,00,6b,\
00,75,00,70,00,50,00,72,00,69,00,76,00,69,00,6c,00,65,00,67,00,65,00,00,00,\
53,00,65,00,43,00,72,00,65,00,61,00,74,00,65,00,53,00,79,00,6d,00,62,00,6f,\
00,6c,00,69,00,63,00,4c,00,69,00,6e,00,6b,00,50,00,72,00,69,00,76,00,69,00,\
6c,00,65,00,67,00,65,00,00,00,00,00
"FailureActions"=hex:84,03,00,00,00,00,00,00,00,00,00,00,03,00,00,00,14,00,00,\
00,01,00,00,00,c0,d4,01,00,01,00,00,00,e0,93,04,00,00,00,00,00,00,00,00,00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\msiserver\Security]
"Security"=hex:01,00,14,80,b4,00,00,00,d4,00,00,00,14,00,00,00,30,00,00,00,02,\
00,1c,00,01,00,00,00,02,80,14,00,ff,01,0f,00,01,01,00,00,00,00,00,01,00,00,\
00,00,02,00,84,00,05,00,00,00,00,00,28,00,ff,01,0f,00,01,06,00,00,00,00,00,\
05,50,00,00,00,b5,89,fb,38,19,84,c2,cb,5c,6c,23,6d,57,00,77,6e,c0,02,64,87,\
00,00,14,00,fd,01,02,00,01,01,00,00,00,00,00,05,12,00,00,00,00,00,18,00,fd,\
01,02,00,01,02,00,00,00,00,00,05,20,00,00,00,20,02,00,00,00,00,14,00,9d,01,\
02,00,01,01,00,00,00,00,00,05,04,00,00,00,00,00,14,00,9d,01,02,00,01,01,00,\
00,00,00,00,05,06,00,00,00,01,06,00,00,00,00,00,05,50,00,00,00,b5,89,fb,38,\
19,84,c2,cb,5c,6c,23,6d,57,00,77,6e,c0,02,64,87,01,06,00,00,00,00,00,05,50,\
00,00,00,b5,89,fb,38,19,84,c2,cb,5c,6c,23,6d,57,00,77,6e,c0,02,64,87
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本帖最后由 linda 于 2017-11-27 13:01 编辑 ]
